Draft deflector



June 9, 1936. v H. 1.. SMITH 2,043,815

DRAFT DEFLECTOR i4 is Patented June 9, 1936 UNITED STATES PATENT OFFICE 1 Claim. (01. 98-99) My invention provides an extremely simple and highly efficient window draft deflector for the ventilation of rooms of dwellings, oflice buildings, and the like, and generally stated, consists of the novel devices, combinations of devices and arrangement of parts hereinafter described and defined in the claim.

This improved ventilator is preferably made from sheet metal which may be provided with enamel or any other coating, preferably such as will harmonize with the painting or finish of the room to which it is to be applied. The ventilator is adjustable within a very large range of windows varying in width, is rigid, indestructible under ordinary use, may be very quickly assembled and applied to the window, and moreover, may be produced at comparatively low cost. It will not produce the glare produced by glass and is not breakable, as is glass.

2 A commercial form of the improved draft deflector or ventilator is illustrated in the accompanying drawing, wherein like characters indicate like parts throughout the several views.

Referring to the drawing: 7

Fig. 1 is a perspective taken from the inside of a room and showing a window to which the draft deflector is applied;

Fig. 2 is a horizontal section taken on the line 2-2 of Fig. 1;

Fig. 3 is a. vertical section taken on the line 33 of Fig. 1;

Fig. 4 is a. horizontal section corresponding to Fig. 2 but illustrating a slightly different way of applying the deflector to a window frame; and

Fig. 5 is a fragmentary plan view of one end of the deflector.

Referring first to the construction illustrated in Figs. 1, 2, and 3, the numeral 5 indicates the sill, the numeral 6 the window side frame, and

the numeral 7 the lower sash of a window of ordinary construction. The numeral 8 indicates the inside stop strips of the side frames, and the numeral 9 indicates a handle applied to the lower edge of the sash 1. The draft deflector is made up of overlapping sheet metal plates III and end plates II. The plates II! are primarily made duplicates or facsimiles, that is, they are of the same vertical width and each is provided at one edge with a relatively narrow outturned flange I2 and at its other edge with a relatively wide U-shaped flange I3. On a particular plate, the flange I2 is turned in one direction and its flange I3 in the other direction. When these two plates are inverted, the narrow flanges I2 are slid telescopically into the wide or U-shaped flanges I3 of the companion plate, thereby making the shield longitudinally extensible and contractible. to fit any window within quite a wide range of difference in width. After the two plates I 0 have thus been made and flanged in exact duplicates, the 5 outer end edges are turned laterally to form flanges I4, which flanges when the plates are teleseoped together, will both project outward.

The end plates II are tapered in a downward direction and their inclined outer edges are bent to form U-shaped or channel flanges I5 into which the end flanges I4 of the two plates are adapted to be slid. The vertical inner edges of the end plates II are shown as provided with inturned anchoring flanges I6 that are perfo- 15 rated for the passage of screws therethrough. Also, the end plates adjacent to the flanges I6 are perforated to provide passages for screws I! which, when applied as shown in Figs. 1 and 2, anchor the end plates directly to the inner faces 20 of the inside stop strips 8. The structure illustrated in Fig. 4 is like that illustrated in Figs. 1, 2, and 3, except that the end plates are shown as anchored to the casing 8a. by screws Ila, passed through the perforations in the flanges lb.

The channel flanges I5 on the oblique edges of the end plates are open at their bottom, so that regardless of the exact adjustments of the said plates in their application to the window frames, the plates ID will, under the action of 30 gravity, slide downward until they rest in close engagement with the window sill. By reference to Fig. 3, it will be noted that the end plates have such width at their lower ends that the hand may freely reach the handle 9 of the sash, 35 even when the sash is lowered. In Fig. 3, the window sash is shown as raised nearly to the top of the end plates, but, of course, the sash may be raised to any desired extent, which will give the proper ventilation without allowing the r 40 wind to blow horizontally into the room.

By reference to Fig. 5, it will be noted that the two plates ID, at their lower edges, are notched as shown at Illw. These notches cut short the bottom and end flanges of the respective plates 5 and thus adapt the said plates to clear the inturned flanges of the end plates I I. This per-- mits the bottom flanges of the said plates always to rest closely in engagement with the sill 5. The flanges I2 and I3 reinforce and stiffen the plates 5 II]. By reference to Fig. 2, it will be noted that the inner ends of said plates are slightly bent outward as shown at Illb so as to facilitate the telescoping of the flanges of the two plates. The angle made by plates I0 and their flanges I2 is 5 supplemental to the angle formed by ID and 5,

that the lower surfacesof the flanges l2 and I the deflecting plates The deflecting plates can be telescoped one upon the other so that they I I3 will rest tightly against the sill 5 and exclude dust and water; The flanges l2 and I3 interlock From the foregoing, it is thought to beevident that all of the advantages above generally set forth'will be accomplished by this improved draft deflector or window ventilator. In commercial usepthe device has beeniound highly satisfac tory. ,It, of coursa'may' be shipped in compact form whenthe end plates are disconnected from occupy only the length of oneplate. 1 'What I claim is:

' 2O A window draft deflector comprising a pair of V 2,048,815 t r, .A

deflecting plates and a pair of end plates, said deflecting plates having upper and lower edge flanges slidable one within the'other, and the outer ends of said deflecting platesand the inner edgesof said end plates having flanges slidable the one within thev other, the inner edges, of said I end plates being oblique and tapering the end plates downwardly, andthe sliding engagement between saidend platesand deflecting plates permitting the latter to slide into contact with the window si1l,said deflecting plates having upper I and lower edge flanges made in the same manner on'both plates but with like flanges projecting in opposite directions, adapting the said sections,

gwhen inverted, to be 'telescoped one in respect to I the other and adapting the deflector to flt win- 'dows varying in width, the lower flanges of said plates being projected toward the interior of the 'room and away from the window. 7

HARRY L.. SMITH. 20 

